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Monkeyboi

Sony STR-DN1080 Inside and Out

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Got a second one of these with the sole purpose of adding some pre-amp outputs to a receiver that doesn't have them.

Thought I'd post a few pics for those interested to know what's on the inside of this Dolby Atmos / dtsX / DSD receiver.

This is the US version of the receiver.

Definitely not the copper chassis, extra large transformer, or the Nichicon Fine Gold electrolytics you'd find in the ES line up , but you wouldn't expect it for the price. :P

Interesting is the strategic attachment of adhesive tape to certain parts of the heatsinks.

 

Cheers,

Alan R. 

 

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2 hours ago, Monkeyboi said:

Interesting is the strategic attachment of adhesive tape to certain parts of the heatsinks. 

Looks like the tape could be used as a cheap and cheerful way of damping vibrations.

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On 24/03/2019 at 6:42 PM, Quark said:

Looks like the tape could be used as a cheap and cheerful way of damping vibrations.

I've seen it used in lots of their hi-fi equipment.  Even found "the tape" on different sections of heatsink on the same model of amplifier or SACD player.  🙄  Including the ES series components.  Surely the don't resonance test every bit of gear that comes off the production line???  Or do they?

 

Cheers,

Alan R.

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Posted (edited)
4 hours ago, Monkeyboi said:

I've seen it used in lots of their hi-fi equipment.  Even found "the tape" on different sections of heatsink on the same model of amplifier or SACD player.  🙄  Including the ES series components.  Surely the don't resonance test every bit of gear that comes off the production line???  Or do they?

 

Cheers,

Alan R.

If they're putting it in the same places on particular models, perhaps it's a standardised approach to vibration control. Mind you, I'd expect more than a bit of tape on ES models, especially for the $ that are asked.

Edited by Quark

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On 28/03/2019 at 2:32 PM, Quark said:

If they're putting it in the same places on particular models, perhaps it's a standardised approach to vibration control. Mind you, I'd expect more than a bit of tape on ES models, especially for the $ that are asked.

Agreed.  ES gear is getting harder to buy new in Australia.  It would appear Sony has somewhat condensed the ES line for our domestic market to but a mere handful of models.  :(

 

I wonder (other than it's inexpensive) do they use what appears to be adhesive tape?  Considering its use on heatsinks I can only imagine the adhesive deteriorating over time and becoming unstuck.  :(

 

Cheers,

Alan R.

 

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1 hour ago, Monkeyboi said:

 

 

I wonder (other than it's inexpensive) do they use what appears to be adhesive tape?  Considering its use on heatsinks I can only imagine the adhesive deteriorating over time and becoming unstuck.  :(

 

Cheers,

Alan R.

 

 

Interestingly, Sansui started to apply Teflon adhesive tape to a number of their later alpha series amps, including a span across the heatsink fins, the rear side of the timber cheeks, internal panels of the amp, and wrapped around selected RIKEN resistors at the input to the amplifier boards. Rubberised bitumen pads were used in other locations. Vibration and resonance control was apparently the name of the game.

 

I haven't seen any of the tape come loose as yet, and many of these amps are 19-25 years old now and would have been subject to numerous heat cycles. I guess it depends on the type of adhesive backing that they use.

 

 

 

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sansui teflon 1.jpg

sansui teflon 2.jpg

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On 01/04/2019 at 10:18 AM, pete_mac said:

 

Interestingly, Sansui started to apply Teflon adhesive tape to a number of their later alpha series amps, including a span across the heatsink fins, the rear side of the timber cheeks, internal panels of the amp, and wrapped around selected RIKEN resistors at the input to the amplifier boards. Rubberised bitumen pads were used in other locations. Vibration and resonance control was apparently the name of the game.

 

I haven't seen any of the tape come loose as yet, and many of these amps are 19-25 years old now and would have been subject to numerous heat cycles. I guess it depends on the type of adhesive backing that they use.

 

 

 

907%20main%20amp%20module%202_zpscnnu80e

 

 

sansui teflon 1.jpg

sansui teflon 2.jpg

Thanks for the heads up and pics.  Interesting to see other manufacturers employing similar techniques.  :)

 

Cheers,

Alan R.

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